package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.EmployeePasswordDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.BaseException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.codec.digest.Md5Crypt;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.awt.*;
import java.time.LocalDateTime;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //需要进行md5加密，然后再进行比对

        password  = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void insert(EmployeeDTO employeeDTO) {
        //拷贝对象
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置属性
        employee.setStatus(StatusConstant.ENABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //设置密码，采用md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //通过localthread得到登陆人id
        Long currentId = BaseContext.getCurrentId();
        employee.setCreateUser(currentId);
        employee.setUpdateUser(currentId);
        employeeMapper.insert(employee);
    }

    /**
     * 分页查询员工
     * @param e
     * @return
     */
    @Override
    public PageResult list(EmployeePageQueryDTO e) {
        //启动分页查询，设置分页参数
        PageHelper.startPage(e.getPage(),e.getPageSize());
        //分页查询
        Page<Employee> page = employeeMapper.list(e);
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 启用禁用员工
     * @param status
     * @param id
     */
    @Override
    public void updateStatus(Integer status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())
                .build();
        employeeMapper.update(employee);

    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        return employeeMapper.getById(id);
    }

    /**
     * 编辑员工信息
     * @param employee
     */
    @Override
    public void update(Employee employee) {
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setUpdateTime(LocalDateTime.now());

        employeeMapper.update(employee);
    }

    /**
     * 修改员工密码
     * @param dto
     */
    @Override
    public void updatePassword(EmployeePasswordDTO dto) {
        String oldPassword = dto.getOldPassword();
        String newPassword = dto.getNewPassword();
        String s = DigestUtils.md5DigestAsHex(oldPassword.getBytes());
        String s1 = DigestUtils.md5DigestAsHex(newPassword.getBytes());
        dto.setOldPassword(s);
        dto.setNewPassword(s1);
        dto.setEmpId(BaseContext.getCurrentId());
        Integer i = employeeMapper.updatePassword(dto);
        if(i == 0){
            throw new BaseException("修改密码失败");
        }
    }


}
